/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hadoop.fs.ozone.contract;

import java.io.IOException;

import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.contract.AbstractFSContract;
import org.apache.hadoop.ozone.MiniOzoneCluster;

import static org.junit.jupiter.api.Assertions.assertNotNull;

/**
 * Base class for Ozone filesystem contracts.  It needs a {@link MiniOzoneCluster},
 * and provides the {@link FileSystem} that's subject of the test.
 */
abstract class AbstractOzoneContract extends AbstractFSContract {

  private final MiniOzoneCluster cluster;

  /**
   * @return root URI for the FileSystem
   */
  protected abstract String getRootURI() throws IOException;

  protected MiniOzoneCluster getCluster() {
    return cluster;
  }

  AbstractOzoneContract(MiniOzoneCluster cluster) {
    super(cluster.getConf());
    this.cluster = cluster;
  }

  @Override
  public FileSystem getTestFileSystem() throws IOException {
    assertNotNull(cluster, "cluster not created");
    getConf().set("fs.defaultFS", getRootURI());
    return FileSystem.get(getConf());
  }
}
